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Meandrina meandrites : ウィキペディア英語版 | Meandrina meandrites
''Meandrina meandrites'', commonly known as maze coral, is a species of colonial stony coral in the family Meandrinidae. It is found primarily on outer coral reef slopes in the Caribbean Sea and the Gulf of Mexico. ==Description== ''Meandrina meandrites'' forms massive hemispherical heads or develops into substantial flat plates and can grow to nearly in diameter. Some small colonies are cone-shaped and are not attached to the substrate. These resemble young colonies of rose coral (''Manicina areolata'') and may be found in sandy or muddy areas some way from reefs. The corallites, the calcareous cups secreted by the polyps, are wide. The raised walls between the corallites are formed from fine but widely separated transverse ridges called septa and meander over the surface of the coral. There is a slight indentation running along the crest of the walls where the septa from adjoining corallites meet. The polyps are large but are only protruded at night when they cover and obscure the skeleton of the coral.
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